Upright vacuum cleaner



FIG. 1 is a perspective view of an upright vacuum cleaner showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof; and,

FIG. 5 is a left side view thereof. 

I claim the ornamental design for an upright vacuum cleaner, as shown and described. 